Neoclassical architecture is an architectural style produced by the neoclassical movement that began in the mid-18th century. In its purest form, it is a style principally derived from the architecture of classical antiquity, the Vitruvian principles, and the work of the Italian architect Andrea Palladio.
In Central and Eastern Europe, the style is usually referred to as Classicism while the newer revival styles of the 19th century until today are called neoclassical.
Intellectually, neoclassicism was symptomatic of a desire to return to the perceived “purity” of the arts of Rome, to the more vague perception (“ideal”) of Ancient Greek arts and, to a lesser extent, 16th-century Renaissance Classicism, which was also a source for academic Late Baroque architecture.
Many early 19th-century neoclassical architects were influenced by the drawings and projects of Étienne-Louis Boullée and Claude Nicolas Ledoux. The many graphite drawings of Boullée and his students depict spare geometrical architecture that emulates the eternality of the universe.